LEIVA, R. . The fair price: Strategies to charge for online news. Cuadernos.info, [S. l.], n. 25, p. 39–50, 2009. DOI: 10.7764/cdi.25.45. Disponível em: https://revistahistoria.uc.cl/index.php/cdi/article/view/21831. Acesso em: 23 jul. 2024.